... good-touch feel.2. Expansion coefficient:3.33.Resist the sharp low temperature and sharp high temperature very well ... the tea flavor.6.Security in dishwashers and microwave oven security7. Mainly applies to:green tea, black tea, fruit tea, puer tea, scented tea,blooming flower tea, health tea ... them an ideal choice when serving wine, beer, coffee, tea, and even kid-friendly beverages such as milk, juice ...